Home / 12,470.12-18,705.19-7,272.35

Finding the Fourth Proportional to 12,470.12, 18,705.19 and 7,272.35

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Solution

The fourth proportional to 12,470.12, 18,705.19 and 7,272.35 is: 10,908.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,470.12 : 18,705.19 = 7,272.35 : x
  2. Step 2: Convert to fraction form
    12,470.12/18,705.19 = 7,272.35/x
  3. Step 3: Cross multiply
    12,470.12x = 18,705.19 × 7,272.35
  4. Step 4: Simplify right side
    12,470.12x = 136,030,688.50
  5. Step 5: Solve for x
    x = 136,030,688.50/12,470.12
  6. Step 6: Final answer
    x = 10,908.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.